<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Backend-Specific Operations</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
<link rel="home" href="index.html" title="GnomeVFS - Filesystem Abstraction library">
<link rel="up" href="gnome-vfs-file-and-dirs-ops.html" title="Advanced File/Directory Operations">
<link rel="prev" href="gnome-vfs-2.0-gnome-vfs-monitor.html" title="Monitoring">
<link rel="next" href="gnome-vfs-file-async-ops.html" title="Asynchronous Operations">
<meta name="generator" content="GTK-Doc V1.15.1 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2">
<tr valign="middle">
<td><a accesskey="p" href="gnome-vfs-2.0-gnome-vfs-monitor.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td>
<td><a accesskey="u" href="gnome-vfs-file-and-dirs-ops.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td>
<th width="100%" align="center">GnomeVFS - Filesystem Abstraction library</th>
<td><a accesskey="n" href="gnome-vfs-file-async-ops.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
</tr>
<tr><td colspan="5" class="shortcuts">
<a href="#gnome-vfs-2.0-gnome-vfs-file-advanced-ops.synopsis" class="shortcut">Top</a>
                   | 
                  <a href="#gnome-vfs-2.0-gnome-vfs-file-advanced-ops.description" class="shortcut">Description</a>
</td></tr>
</table>
<div class="refentry">
<a name="gnome-vfs-2.0-gnome-vfs-file-advanced-ops"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gnome-vfs-2.0-gnome-vfs-file-advanced-ops.top_of_page"></a>Backend-Specific Operations</span></h2>
<p>Backend-Specific Operations — Execute backend-specific operations</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="gnome-vfs-2.0-gnome-vfs-file-advanced-ops.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis"><a class="link" href="gnome-vfs-2.0-gnome-vfs-result.html#GnomeVFSResult" title="enum GnomeVFSResult"><span class="returnvalue">GnomeVFSResult</span></a>      <a class="link" href="gnome-vfs-2.0-gnome-vfs-file-advanced-ops.html#gnome-vfs-file-control" title="gnome_vfs_file_control ()">gnome_vfs_file_control</a>              (<em class="parameter"><code><span class="type">GnomeVFSHandle</span> *handle</code></em>,
                                                         <em class="parameter"><code>const <span class="type">char</span> *operation</code></em>,
                                                         <em class="parameter"><code><span class="type">gpointer</span> operation_data</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="gnome-vfs-2.0-gnome-vfs-file-advanced-ops.description"></a><h2>Description</h2>
<p>
  Advanced file operations allow you to execute backend-specific commands.
  Currently, none of the <span class="type">GnomeVFSModules</span> shipped with GnomeVFS includes
  useful operations, but they allow sophisticated module-specific code
  that can not be added to GnomeVFS because it would break abstraction.
</p>
</div>
<div class="refsect1">
<a name="gnome-vfs-2.0-gnome-vfs-file-advanced-ops.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="gnome-vfs-file-control"></a><h3>gnome_vfs_file_control ()</h3>
<pre class="programlisting"><a class="link" href="gnome-vfs-2.0-gnome-vfs-result.html#GnomeVFSResult" title="enum GnomeVFSResult"><span class="returnvalue">GnomeVFSResult</span></a>      gnome_vfs_file_control              (<em class="parameter"><code><span class="type">GnomeVFSHandle</span> *handle</code></em>,
                                                         <em class="parameter"><code>const <span class="type">char</span> *operation</code></em>,
                                                         <em class="parameter"><code><span class="type">gpointer</span> operation_data</code></em>);</pre>
<p>
Execute a backend dependent operation specified by the string <em class="parameter"><code>operation</code></em>.
This is typically used for specialized vfs backends that need additional
operations that gnome-vfs doesn't have. Compare it to the unix call <code class="function">ioctl()</code>.
The format of <em class="parameter"><code>operation_data</code></em> depends on the operation. Operation that are
backend specific are normally namespaced by their module name.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>handle</code></em> :</span></p></td>
<td>handle of the file to affect.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>operation</code></em> :</span></p></td>
<td>operation to execute.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>operation_data</code></em> :</span></p></td>
<td>data needed to execute the operation.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> an integer representing the success of the operation.
</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="footer">
<hr>
          Generated by GTK-Doc V1.15.1</div>
</body>
</html>